CN203931771U

CN203931771U - Novel photovoltaic transformer

Info

Publication number: CN203931771U
Application number: CN201420364589.9U
Authority: CN
Inventors: 吴爱国; 丁赟; 胡斌康
Original assignee: JIANGSU HENGTE GROUP VALTTE ELECTRIC CO Ltd
Current assignee: JIANGSU HENGTE GROUP VALTTE ELECTRIC CO Ltd
Priority date: 2014-07-03
Filing date: 2014-07-03
Publication date: 2014-11-05
Anticipated expiration: 2024-07-03

Abstract

The utility model relates to transformer technology field, be specifically related to Novel photovoltaic transformer, comprise high pressure winding, low pressure winding and iron core, wherein, described high pressure winding is a high-tension coil, described low pressure winding comprises the first low-voltage coil and the second low-voltage coil, described the first low-voltage coil and the second low-voltage coil interlaced arrangement; The utility model is by adopting the first low-voltage coil and the second low-voltage coil interlaced arrangement, make the high-tension coil of this photovoltaic transformer can make a coil, reduce the number of turn of high-tension coil, thereby high-tension coil hop count and the number of plies are all reduced thereupon, the first low-voltage coil and the second low-voltage coil are made up of multiplex winding simultaneously, make like this coil inside Electric Field Distribution more even, finally ensure that coil has good electric property, and can avoid occurring partial discharge or lightning impulse phenomenon, effectively extend useful life.

Description

Novel photovoltaic transformer

Technical field

The utility model relates to transformer technology field, is specifically related to Novel photovoltaic transformer.

Background technology

Nowadays,, along with day by day reducing and the consciousness enhancing of the mankind to environmental protection of global energy, there is in recent years the development of advancing by leaps and bounds taking wind energy, solar energy as the generating cause of the core energy, and will become whole world energy supply main body.Wind-force, solar photovoltaic generation system can be divided into two kinds of autonomous system and net systems, and autonomous system is mainly used at present without electricity or lacks the outlying district of electric power, and net system is to move with utility network direct grid-connected.Its weak point is: the dual-winding double-splitting structural design that existing transformer adopting is traditional, i.e. two groups of low-voltage coil axial splits, two groups of high-tension coil axial arrangings, when cast, two groups of coils pour into a coil, and electric upper two groups of coils from parallel connection of coils unifications are drawn; Said structure makes the coil electric poor performance of its transformer, is prone to partial discharge or lightning impulse phenomenon, thus the useful life of having reduced transformer.

Summary of the invention

It is even that the purpose of this utility model is to provide a kind of coil inside Electric Field Distribution, thereby can ensure that coil has good electric property, and partial discharge quantity is few, and lightning impulse resistant ability is strong, the Novel photovoltaic transformer that has effectively extended useful life.

In order to solve the existing problem of background technology, the utility model is by the following technical solutions: Novel photovoltaic transformer, comprise high pressure winding, low pressure winding and iron core, described high pressure winding is a high-tension coil, described low pressure winding comprises the first low-voltage coil and the second low-voltage coil, described the first low-voltage coil and the second low-voltage coil interlaced arrangement, the end of described the first low-voltage coil and the welding of the first conducting copper are drawn, and the end of described the second low-voltage coil and the welding of the second conducting copper are drawn; Described the first low-voltage coil and the second low-voltage coil comprise at least respectively four maps, between described each map, are connected in parallel.

Further, the conductor of described the first low-voltage coil and the second low-voltage coil is Copper Foil or aluminium foil.

Further, the equal turn numbers of the number of turn of described the first low-voltage coil and the second low-voltage coil.

Further, the section insulation of described transformer adopts epoxy plate to level up.

Further, the layer insulation of described transformer adopts DMD insulating paper.

The utlity model has following beneficial effect: Novel photovoltaic transformer described in the utility model, comprise high pressure winding, low pressure winding and iron core, wherein, described high pressure winding is a high-tension coil, described low pressure winding comprises the first low-voltage coil and the second low-voltage coil, described the first low-voltage coil and the second low-voltage coil interlaced arrangement; The utility model is by adopting the first low-voltage coil and the second low-voltage coil interlaced arrangement, make the high-tension coil of this photovoltaic transformer can make a coil, reduce the number of turn of high-tension coil, thereby high-tension coil hop count and the number of plies are all reduced thereupon, the first low-voltage coil and the second low-voltage coil are made up of multiplex winding simultaneously, make like this coil inside Electric Field Distribution more even, finally ensure that coil has good electric property, and partial discharge quantity is few, lightning impulse resistant ability is strong, has effectively extended useful life.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the elementary diagram of the utility model mesolow winding.

Fig. 3 be in the utility model the first low-voltage coil and the second low-voltage coil respectively with the first conducting copper and the second conducting copper connection diagram.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in more detail.

As Fig. 1, Fig. 2, shown in Fig. 3, Novel photovoltaic transformer, comprise high pressure winding, low pressure winding and iron core, described high pressure winding is a high-tension coil, described low pressure winding comprises the first low-voltage coil 1 and the second low-voltage coil 2, described the first low-voltage coil 1 and the second low-voltage coil 2 interlaced arrangement, the end of described the first low-voltage coil 1 and the first conducting copper 3 welding are drawn, the end of described the second low-voltage coil 2 and the second conducting copper 4 welding are drawn, the first conducting copper 3 and the second conducting copper 4 all can be designed to aluminium row, design can ensure that coil has good electric property like this, wherein, starting when x1 is the first low-voltage coil 1 coiling, a1 is the complete head of the first low-voltage coil 1 coiling while completing, its around to be right around to, starting when x2 is the second low-voltage coil 2 coiling, a2 is the complete heads of the second low-voltage coil 2 coilings while completing, its around to be right around to, described the first low-voltage coil 1 and the second low-voltage coil 2 comprise at least respectively four maps 5, between described each map 5, be connected in parallel, it should be noted that here, the coil of a transformer can be tens tunnels, in the present embodiment, the coil 5 Wei Liu roads of this photovoltaic transformer, way distributes more, and Electric Field Distribution is more even, thereby the electric property of coil is strengthened, can avoid occurring partial discharge or lightning impulse phenomenon, reduce energy consumption, effectively extend useful life.

The conductor of described the first low-voltage coil 1 and the second low-voltage coil 2 is Copper Foil or aluminium foil, and design has coiling conveniently, security performance advantages of higher like this.

The equal turn numbers of the number of turn of described the first low-voltage coil 1 and the second low-voltage coil 2, wherein, the number of turn altogether of every coil is 12 circles, makes like this Electric Field Distribution more even.

The section insulation of described transformer adopts epoxy plate 6 to level up; The layer insulation of described transformer adopts DMD insulating paper 7, has further improved the insulating properties of this photovoltaic transformer, stable, the reliable and fail safe while having ensured transformer operation.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, other amendments that those of ordinary skill in the art make the technical solution of the utility model or be equal to replacement, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. Novel photovoltaic transformer, comprise high pressure winding, low pressure winding and iron core, it is characterized in that, described high pressure winding is a high-tension coil, described low pressure winding comprises the first low-voltage coil (1) and the second low-voltage coil (2), described the first low-voltage coil (1) and the second low-voltage coil (2) interlaced arrangement, the end of described the first low-voltage coil (1) and the first conducting copper (3) welding are drawn, and the end of described the second low-voltage coil (2) and the second conducting copper (4) welding are drawn; Described the first low-voltage coil (1) and the second low-voltage coil (2) comprise at least respectively four maps (5), between described each map (5), are connected in parallel.

2. Novel photovoltaic transformer low voltage winding according to claim 1, is characterized in that, the conductor of described the first low-voltage coil (1) and the second low-voltage coil (2) is Copper Foil or aluminium foil.

3. Novel photovoltaic transformer low voltage winding according to claim 1, is characterized in that the equal turn numbers of the number of turn of described the first low-voltage coil (1) and the second low-voltage coil (2).

4. Novel photovoltaic transformer low voltage winding according to claim 1, is characterized in that, the section insulation of described transformer adopts epoxy plate (6) to level up.

5. Novel photovoltaic transformer low voltage winding according to claim 1, is characterized in that, the layer insulation of described transformer adopts DMD insulating paper (7).